1 | #
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2 | # Makefile for the VirtualBox Linux Host PCI Driver.
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3 | # (For 2.6.x this file must be called 'Makefile'!)
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4 | #
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5 |
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6 | #
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7 | #
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8 | # Copyright (C) 2011-2015 Oracle Corporation
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9 | #
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10 | # This file is part of VirtualBox Open Source Edition (OSE), as
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11 | # available from http://www.virtualbox.org. This file is free software;
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12 | # you can redistribute it and/or modify it under the terms of the GNU
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13 | # General Public License (GPL) as published by the Free Software
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14 | # Foundation, in version 2 as it comes in the "COPYING" file of the
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15 | # VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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16 | # hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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17 | #
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18 |
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19 | #
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20 | # First, figure out which architecture we're targeting and the build type.
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21 | # (We have to support basic cross building (ARCH=i386|x86_64).)
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22 | # While at it, warn about BUILD_* vars found to help with user problems.
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23 | #
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24 | ifeq ($(filter-out x86_64 amd64 AMD64,$(shell uname -m)),)
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25 | BUILD_TARGET_ARCH_DEF := amd64
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26 | else
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27 | BUILD_TARGET_ARCH_DEF := x86
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28 | endif
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29 | ifneq ($(filter-out amd64 x86,$(BUILD_TARGET_ARCH)),)
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30 | $(warning Ignoring unknown BUILD_TARGET_ARCH value '$(BUILD_TARGET_ARCH)'.)
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31 | BUILD_TARGET_ARCH :=
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32 | endif
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33 | ifeq ($(BUILD_TARGET_ARCH),)
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34 | ifeq ($(ARCH),x86_64)
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35 | BUILD_TARGET_ARCH := amd64
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36 | else
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37 | ifeq ($(ARCH),i386)
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38 | BUILD_TARGET_ARCH := x86
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39 | else
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40 | BUILD_TARGET_ARCH := $(BUILD_TARGET_ARCH_DEF)
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41 | endif
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42 | endif
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43 | else
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44 | ifneq ($(BUILD_TARGET_ARCH),$(BUILD_TARGET_ARCH_DEF))
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45 | $(warning Using BUILD_TARGET_ARCH='$(BUILD_TARGET_ARCH)' from the $(origin BUILD_TARGET_ARCH).)
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46 | endif
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47 | endif
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48 |
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49 | ifneq ($(filter-out release profile debug strict,$(BUILD_TYPE)),)
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50 | $(warning Ignoring unknown BUILD_TYPE value '$(BUILD_TYPE)'.)
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51 | BUILD_TYPE :=
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52 | endif
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53 | ifeq ($(BUILD_TYPE),)
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54 | BUILD_TYPE := release
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55 | else
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56 | ifneq ($(BUILD_TYPE),release)
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57 | $(warning Using BUILD_TYPE='$(BUILD_TYPE)' from the $(origin BUILD_TYPE).)
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58 | endif
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59 | endif
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60 |
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61 | # override is required by the Debian guys
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62 | override MODULE = vboxpci
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63 | OBJS = \
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64 | linux/VBoxPci-linux.o \
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65 | VBoxPci.o \
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66 | SUPR0IdcClient.o \
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67 | SUPR0IdcClientComponent.o \
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68 | linux/SUPR0IdcClient-linux.o
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69 |
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70 | ifeq ($(BUILD_TARGET_ARCH),x86)
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71 | OBJS += math/gcc/divdi3.o \
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72 | math/gcc/moddi3.o \
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73 | math/gcc/qdivrem.o \
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74 | math/gcc/udivdi3.o \
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75 | math/gcc/divdi3.o \
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76 | math/gcc/umoddi3.o
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77 | endif
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78 |
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79 | ifneq ($(MAKECMDGOALS),clean)
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80 |
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81 | ifeq ($(KERNELRELEASE),)
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82 |
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83 | #
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84 | # building from this directory
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85 | #
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86 |
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87 | # kernel base directory
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88 | ifndef KERN_DIR
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89 | # build for the current kernel, version check
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90 | KERN_DIR := /lib/modules/$(shell uname -r)/build
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91 | ifneq ($(shell if test -d $(KERN_DIR); then echo yes; fi),yes)
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92 | KERN_DIR := /usr/src/linux
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93 | ifneq ($(shell if test -d $(KERN_DIR); then echo yes; fi),yes)
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94 | $(error Error: unable to find the sources of your current Linux kernel. \
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95 | Specify KERN_DIR=<directory> and run Make again)
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96 | endif
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97 | $(warning Warning: using /usr/src/linux as the source directory of your \
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98 | Linux kernel. If this is not correct, specify \
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99 | KERN_DIR=<directory> and run Make again.)
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100 | endif
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101 | else
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102 | ifneq ($(shell if test -d $(KERN_DIR); then echo yes; fi),yes)
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103 | $(error Error: KERN_DIR does not point to a directory)
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104 | endif
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105 | endif
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106 |
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107 | # includes
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108 | ifndef KERN_INCL
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109 | KERN_INCL = $(KERN_DIR)/include
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110 | endif
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111 | ifneq ($(shell if test -d $(KERN_INCL); then echo yes; fi),yes)
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112 | $(error Error: unable to find the include directory for your current Linux \
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113 | kernel. Specify KERN_INCL=<directory> and run Make again)
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114 | endif
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115 |
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116 | # module install dir, only for current kernel
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117 | ifneq ($(filter install install_rpm,$(MAKECMDGOALS)),)
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118 | ifndef MODULE_DIR
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119 | MODULE_DIR_TST := /lib/modules/$(shell uname -r)
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120 | ifeq ($(shell if test -d $(MODULE_DIR_TST); then echo yes; fi),yes)
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121 | MODULE_DIR := $(MODULE_DIR_TST)/misc
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122 | else
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123 | $(error Unable to find the folder to install the support driver to)
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124 | endif
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125 | endif # MODULE_DIR unspecified
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126 | endif
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127 |
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128 | else # neq($(KERNELRELEASE),)
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129 |
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130 | #
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131 | # building from kbuild (make -C <kernel_directory> M=`pwd`)
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132 | #
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133 |
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134 | endif # neq($(KERNELRELEASE),)
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135 |
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136 | # debug - show guesses.
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137 | ifdef DEBUG
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138 | $(warning dbg: KERN_DIR = $(KERN_DIR))
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139 | $(warning dbg: KERN_INCL = $(KERN_INCL))
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140 | $(warning dbg: MODULE_DIR = $(MODULE_DIR))
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141 | endif
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142 |
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143 | KBUILD_VERBOSE ?= 1
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144 |
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145 | #
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146 | # Compiler options
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147 | #
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148 | ifndef INCL
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149 | INCL := $(addprefix -I,$(KERN_INCL) $(EXTRA_INCL))
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150 | ifndef KBUILD_EXTMOD
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151 | KBUILD_EXTMOD := $(shell pwd)
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152 | endif
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153 | INCL += $(addprefix -I$(KBUILD_EXTMOD),/ /include /r0drv/linux)
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154 | INCL += $(addprefix -I$(KBUILD_EXTMOD)/vboxpci,/ /include /r0drv/linux)
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155 | export INCL
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156 | endif
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157 | ifneq ($(wildcard $(KBUILD_EXTMOD)/vboxpci),)
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158 | MANGLING := $(KBUILD_EXTMOD)/vboxpci/include/VBox/SUPDrvMangling.h
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159 | else
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160 | MANGLING := $(KBUILD_EXTMOD)/include/VBox/SUPDrvMangling.h
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161 | endif
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162 | KFLAGS := -D__KERNEL__ -DMODULE -DRT_OS_LINUX -DIN_RING0 -DIN_RT_R0 \
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163 | -DIN_SUP_R0 -DVBOX -DRT_WITH_VBOX -DVBOX_WITH_HARDENING
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164 | ifdef VBOX_REDHAT_KABI
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165 | KFLAGS += -DVBOX_REDHAT_KABI
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166 | endif
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167 | ifeq ($(BUILD_TARGET_ARCH),amd64)
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168 | KFLAGS += -DRT_ARCH_AMD64
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169 | else
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170 | KFLAGS += -DRT_ARCH_X86
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171 | endif
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172 | # must be consistent with Config.kmk!
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173 | KFLAGS += -DVBOX_WITH_64_BITS_GUESTS
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174 | ifeq ($(BUILD_TYPE),debug)
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175 | KFLAGS += -DDEBUG -DDEBUG_$(USER) -g
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176 | # IPRT_DEBUG_SEMS indicates thread wrt sems state via the comm field.
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177 | #KFLAGS += -DIPRT_DEBUG_SEMS
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178 | endif
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179 |
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180 | # By default we use remap_pfn_range() kernel API to make kernel pages
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181 | # visible for userland. Unfortunately, it leads to situation that
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182 | # during debug session all structures on that page (such as PVM pointer)
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183 | # are not accessible to the debugger (see #3214).
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184 | # This code enables experimental support
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185 | # for vm_insert_page() kernel API, allowing to export kernel pages
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186 | # to the userland in more debugger-friendly way. Due to stability
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187 | # concerns, not enabled by default yet.
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188 | ifdef VBOX_USE_INSERT_PAGE
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189 | KFLAGS += -DVBOX_USE_INSERT_PAGE
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190 | endif
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191 |
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192 | MODULE_EXT := ko
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193 | $(MODULE)-y := $(OBJS)
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194 |
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195 | # build defs
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196 | EXTRA_CFLAGS += -include $(MANGLING) $(INCL) $(KFLAGS) $(KDEBUG) -fno-pie
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197 |
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198 | all: $(MODULE)
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199 |
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200 | obj-m += $(MODULE).o
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201 |
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202 | # OL/UEK: disable module signing for external modules -- we don't have any private key
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203 | $(MODULE):
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204 | $(MAKE) KBUILD_VERBOSE=$(KBUILD_VERBOSE) SUBDIRS=$(CURDIR) SRCROOT=$(CURDIR) CONFIG_MODULE_SIG= -C $(KERN_DIR) modules
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205 |
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206 | install: $(MODULE)
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207 | @mkdir -p $(MODULE_DIR); \
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208 | install -m 0644 -o root -g root $(MODULE).$(MODULE_EXT) $(MODULE_DIR); \
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209 | PATH="$(PATH):/bin:/sbin" depmod -a;
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210 |
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211 | install_rpm: $(MODULE)
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212 | @mkdir -p $(MODULE_DIR); \
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213 | install -m 0644 $(MODULE).$(MODULE_EXT) $(MODULE_DIR)
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214 |
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215 | else # eq ($(MAKECMDGOALS),clean)
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216 |
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217 | ifndef KERN_DIR
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218 | KERN_DIR := /lib/modules/$(shell uname -r)/build
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219 | ifeq ($(wildcard $(KERN_DIR)/Makefile),)
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220 | KERN_DIR := /usr/src/linux
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221 | endif
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222 | endif
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223 | ifeq ($(wildcard $(KERN_DIR)/Makefile),)
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224 |
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225 | clean:
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226 | find . \( -name \*.o -o -name \*.cmd \) -print0 | xargs -0 rm -f
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227 | rm -rf .tmp_ver* $(MODULE).* Module.symvers Modules.symvers modules.order
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228 |
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229 | else
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230 |
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231 | clean:
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232 | $(MAKE) KBUILD_VERBOSE=$(KBUILD_VERBOSE) SUBDIRS=$(CURDIR) SRCROOT=$(CURDIR) -C $(KERN_DIR) clean
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233 |
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234 | endif
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235 |
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236 | endif # eq($(MAKECMDGOALS),clean)
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